IT turns out absolutely nothing, at least according to ‘author’ Sheridan Simove.

The Oxford University graduate has just compiled a 200-page book on the topic in which every page is completely blank.

Within days of being released, the blank book became an instant worldwide hit, and sold out on Amazon following heavy promotion in student unions across Britain.

Now, the book has been introduced to Spain as a novelty gift.

Speaking at Madrid Book Fair, Simove, 39, joked: “This book is the result of 39 years of painstaking research and practical study into the subject.

“After many years of hard work I finally realised that men think of absolutely nothing apart from sex.

“It was a shocking conclusion and I realised that the world needed to be informed of my findings.”